Upload failures waste editing time. Operators treat connectivity like production equipment: tested, backed up, and logged.
Stable 20 Mbps upload for 1080p; 50+ Mbps comfortable for 4K. Use wired Ethernet for large uploads when possible.
Verify file integrity, export a backup copy, and upload during off-peak hours if your ISP throttles evenings. YouTube Studio allows scheduling while processing.
Phone hotspot with enough data for a re-upload if home internet drops. Name files with date and version to avoid uploading the wrong export.